Adjusted linear regression model in whole sample
| Predictors | Regression coefficient (B) and 95% CI | p Value |
|---|---|---|
| Smoking status | 4.53 (0.56 to 8.49) | 0.025 |
| Baseline mental health | 0.54 (0.46 to 0.61) | <0.001 |
| NRT (active=1) | 0.47 (−1.93 to 2.86) | 0.703 |
| FTND score | −0.57 (−1.19 to 0.06) | 0.062 |
| Sex (female=1) | −2.69 (−5.10 to −0.29) | 0.028 |
| Age | 0.04 (−0.08 to 0.15) | 0.54 |
| Trial ID (reference=1) | ||
| 2 | 6.04 (2.39 to 9.69) | 0.001 |
| 3 | 2.84 (−1.04 to 6.72) | 0.151 |
| 4 | 1.68 (−1.69 to 5.04) | 0.329 |
| 5 | 2.69 (−0.99 to 6.38) | 0.152 |
FTND, Fagerström Test of Nicotine Dependency; NRT, nicotine replacement therapy.